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Rear Extension Approval Rates in West Berkshire

Rear extensions are the bread and butter of UK planning — and one of the most common reasons homeowners face a refusal. Here's what 110 real decisions tell us about rear extension outcomes in West Berkshire.

110 real decisions·January 2020 to present·Updated June 2026
92.7%
Approval Rate
110
Decisions
102
Approved
8
Refused
92.7% approved. But 8 refused since 2020. Each refusal cost the homeowner time and money on drawings and application fees. Understanding your local data before you apply is the difference between confidence and a costly gamble.

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Why rear extension approval rates matter

Rear extensions sit in the middle of the pack nationally. They're common enough that councils have clear precedent — but that cuts both ways. If your neighbours have been refused, that precedent works against you too.

These are council averages. Your property is specific.

Two houses on the same street can get different outcomes.
Check your postcode to see what actually happens near your address.

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How rear extensions compare to other project types

Not all applications are treated equally. Here's how rear extensions stack up against other common projects in West Berkshire.

TypeDecisionsRate
Conservatory26
100.0%
Dormer30
96.7%
Outbuilding69
92.8%
Rear Extension110
92.7%
Side Extension66
90.9%
Garage / Parking186
88.2%
Change of Use (Residential)54
87.0%
Extension (General)77
84.4%
New Build27
70.4%
See how this applies to your postcode →

What the data tells us

1
92.7% of rear extension applications in West Berkshire get approved. That means 8 homeowners since 2020 have been refused. Not terrible odds, but not a foregone conclusion.
3
Council averages are starting points, not guarantees. The decisions that matter most are the comparable ones near your specific property — because planning officers look at precedent, character and the immediate context of your street.

Before you spend £5,000+ on architects and drawings

8 rear extension applications in West Berkshire have been refused since 2020. Many of those homeowners had already paid for drawings and application fees. A free, property-specific report shows you what gets approved — and what gets refused — near your property.

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More West Berkshire planning data

Methodology: Based on 110 planning decisions classified as rear extensions in West Berkshire, January 2020 to present. Classification uses keyword matching against proposal descriptions (matching generate_site_data.py rules). A single application may appear in multiple categories. Approval rate = approved / (approved + refused). Pending, withdrawn and invalid applications excluded. Data from West Berkshire Council's public planning portal. Full methodology →
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